Spring wheel



April 10, 1928. 1,665,558

F. W.l MONTGOMERY SPRING WHEEL Filed Jan.22, 1925 2 Sneetsheet 2 s sa'/ vii 0 t [Jv VEA/TUR:

.TTEJVEXI Patented Apr. 10, 1928.

f UNITED -S'Tf/YFESv` `llllNT OFFICE.

f FEED W. MONTGOMERY, E rNonirH srrAUL, MINNESOTA. f.

' SPRING WHEEL. l

Application ined January 22,1925. serial No. 3,968.v

My invention relatesto springwheelsfor automobiles and other vehicles and the object is 'to provide a supporting ground wheel with springs arranged in such an improved manner that they may dispense with tires, particularly pneumat-ic tires.

The underlying method of arranging the springs is the same in the variously modl-V iied forms shown in the accompanying drawings, in which: e

Fig.k 1 is aV side elevationbf a vehicle supporting wheel embodying my lnventlon one of the side discs being partly broken away. l l

Fig. 2 is a vsection on the line 2-2'1n Fig. 1. j

Fig. 3 is a detail sectional view of the fellyushowing'a modiiedform ofthe r1m. V

Fig. 4 is a, section on the line 4f4 1n Fis 1- Fig. -5 is a side elevation of al portionof the wheel with parts. broken away and with the springs modified and'tire omitted.

Fig. 6 is a section on the line 6-6 1n Fig. 7 is an enlarged edge view of one of the springs in Fig. 5.

Fig. 8 is a right hand side view of Fig. 7 with one of the discs orwashers 40 removed.

Fig. 9 i-s an edge view of either one of the j discs in Fig. 7.

Fig. 10 is a side view of a further modication of the spring shown in Fig. 8.

Referring to the drawing by' reference numerals, the wheel has a hub and a felly 16 preferably of cast metal and connected by spring spokes of variously modiiied forms as will presently be fully described, but in all such forms each spoke consists of two members 18 and 19 joined together at 20 -at about right angles and having the other ends rigidly secured one in the hub and the other 'in the telly.

The 'elly may have a solid rubber tire as 21 in Figs. 1, 2 and 4 or have no tire at all as in Figs. 5 and 6. Where a tire is used it may have a suitable rim as indicatedv at 22 in Figs. 2 and 4, or a demountable rim as 22a in Fig. 3, held by clamps 23.

In Fig. 2 is shown an axle 24 with nut 25 normally covered by a suitable dust cap 26. In Fig. 4 is shown that the flat spring spokes have their outer end-s 19 placed in' grooves 27 in each side of the telly and provided each with a notch 28 engaging a rib 29 of the casting so as to resist extraction of the spoke which is held edgeways in said Y groove 27 by sheet metal ring 30 secured to the sides ofthe telly by bolts 31 having countersunk'heads 32 and threaded 'at'. 33

into the opposite ring 30. The inner member 18 of each spoke is in like mannerl securedv in a groove 27 having 'a rib 29 en# gaging a notch in the spring, and the latter is held in place by a ring secured to each side of the hub by screws 301. (see Fig, 1) having countersunk heads so as ring smooth forthe slidable packing rings 34 formed integral with discs 35 secured one on each side'of the 'elly by bolts 36 and having yeach 'a central laperture the' hub Yto vmove when the spring-spokes yield. `The packing rings 34 and the discs 35 serve to keep dirt out of the interior of thewheel. n Y y In Fig. l is Vshown that each'spoke member may be reinforced by leaf springs 18X and 19X, and that each member is iirmly held in a cl'iordaldirection' eitherr in the hub or in them'iell ,Lwhereore in operation `the spokesv "makeiesistance to all" downward pressure by the hub and axle, more s0 because only about half of such pressure is in lateral direction of the members, the other half being endwise against them.

In the modifications shown in Figs. 5 to 1() the resistance of the spring spokes is further increased by giving Athe joints 20 of the spoke members an integral spring coil 17 0r 17a which may be of thev form shown in Figs. 5 to 8 or the simpler form shown in Fig. 10. In this case the spoke is preferably made oi heavy spring wireand the ends formed with hooks 38, 38a engaging in suitable depressions formed in the hub and the telly respectively. The coil 17 in Figs. 6, 7 "and 8 is stitfened against lateral pressure by a bolt 39 and two washers 40 placed one at each side of the coil and having central embossments 41' (see Fig. 9) contacting with each other within the coil when drawn together by the bolt 39, thus leaving an annular groove 42 in which the sprin coil may expand and contract freely. Fire hookshaped 'endsof suchspring spoke are held in place by rings 30 and 30L and bolts 31 the same as in Figs. l and 2.

What I claim is: e

1. In a spring wheel, a hub and a telly, said hub and felly having in their `opposite sides a plurality of obliquely disposed grooves, a series of spokes arranged in pairs,

37 to permit -y each spoke comprising two members disposed at substantially right angles and connected at their inner ends, the outer ends of said members being engaged respectively with the grooves of the hub and telly, Hat metal rings secured to the opposite sides of the hub and felly whereby the ends of the spokes are held against lateral movement from the grooves, and centrally apertured discs secured at their outer edges to the opposite sides of the telly,

the centrally apertured portions of said discsv having a sliding engagement with the plates on the. opposite sides of the hub. i i

2. In a spring wheel, a hub and a felly, said hub and `'telly having in their opposite sides a plurality `of obliqnely disposed grooves, a series of spokes arranged in pairs, each spoke comprising two members disposed at substantially right angles and con-l nected at their inner ends, `the outer ends of said members being engagedrespectively with hthe grooves of ,the` hub and it'eily, flat metal rings secured to the opposite sides of the hub and telly wherebyathe ends of the spokes are `held"against lateral mmfement from the grooves, centrallyapertnred discs, said centrally apertured portions of 'thediscs having annular recesses, and packing rings arranged in said recesses to 'form a dust tightengageinentbetween. the ydiscs` and hub PlatGSf 3. In a spring Wheel, a hub and a felly,

said hub` and 'telly having` in their opposite 1 sides `a plurality `o'lE obliopiely` disposed grooves, ribs formed in the inner Walls of said grooves, aseries of spokes composed of t-Wofmembers arranged at substantially right angles and connected at their inner ends, the outer ends of said spoke members being engaged respectively with the grooves in the iiellyand hub and having notches to receive the`ribs in said grooves whereby the ends of the spokes are held against retraction from thegrooves and means whereby the ends .ol` the spokes areheld against lateral movement from said. grooves.

4l. In a spring wheel, a hub and a rfelly, said hub and ielly having in their opposite. sides a l plurality of lobliquely disposed grooves, ribs formed in the inner walls of said grooves, a series of spokes oon'iposed of tivo membersarranged at substantially right angles and connected at their inner ends, the outer ends olf said spoke members being engaged respectivelywiththe grooves in the telly `and hub andhaving notches to receive the ribs in said grooves whereby the ends of: the spokes are held against retraction from the grooves, flatlnfxetal rings secured vto the opposite sides of the hub and the Jr'elly Where- 'by the ends ot the spokes are held against lateral movel'nent from the grooves, and een` trally apertlnrediscs secured at their outer edges'to the opposite sides of the felly, the

centrallyl apertnred `portions of said ydiscs having a sliding engagement with the` plates on the opposite sides of :the hub. p

In testimony xvhereotI allix my signature.

` FRED W. MONTGOMERY.` l 

